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Date:      Tue, 22 Dec 1998 14:34:44 -0700 (MST)
From:      "Justin T. Gibbs" <gibbs@narnia.plutotech.com>
To:        Joerg Wunsch <joerg_wunsch@uriah.heep.sax.de>
Cc:        scsi@FreeBSD.ORG
Subject:   Re: 3.0R && AHA1540A == no go
Message-ID:  <199812222134.OAA14499@narnia.plutotech.com>
In-Reply-To: <19981222173104.28962@uriah.heep.sax.de>

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In article <19981222173104.28962@uriah.heep.sax.de> you wrote:
> Hi all,
> 
> today i've tried to install FreeBSD 3.0R on my scratch machine (that
> used to run some 2.2.x variant before), and the installation kernel
> failed with:
> 
> (waiting 15 seconds blah blah)
> panic: Inavlid CCB opcode code 3 hccb = 0xf05aad08

I believe that the 1540A does not support residual calculating
CCB opcodes.  So, you'd have to modify the driver to use these
opcodes on pre-historic devices.  Unfortunately it is impossible
to get correct underrun information without these opcodes, so you'll
have to get creative in this case and you may expose portions of
the CAM code that become confused if the residual reported is incorrect.

--
Justin

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